Improved capstan-windlass



DAVID N., B.,Corr1N, Jn., or NEWTON, AssioNOul TO HinsnLr' AND IRA'H D; SPAULDING, Or BOSTON, MAssAoHUsnTTs.

iLetters Patent No. 98,032, dated` December 21, 186i).

i Mm

IMPROVED CAPSTAN-WINDLASS.

TheSchedule referred to n these Letters Patent: and making part of the same.

10 all whom 'it may concern:

Beritkuown that L DAVID N. B. GorFlN, Jr., of Newton, `in the county ofMiddleseX, and State ot Massachusetts', have invented certain Improvements in Capstans and rVVindlasscs; and I do hereby declare that the ibll'owingis afull and exact description thereof, referenceheing had to theaccomp-.mying drawings, and t0 the letters of reference marked thereon.

With reference to thedrawings- Figure l is a'perspective view of my combined cap- V stan and windlass, and illustrating` the mode of conimunicating motion from one to the other. r

Figure' shows a modification of' the cam shown in fig. 1.

y Figure 3 shows another modification ot this cam, in whicha waved formofl the groove or angefis illustrated.

Figure 9 illustrates my method ,of securing the iianged support to all the gears.

Figure 11 illustrates the connecting of the rocking shaft directly to the shackle or link which connects the lever-beam to the pawl-cascs or primary levers of the windlass.

Figure 12 illustrates the connect-ingr of the rocking shaft directly to the lever or other vibrating beam.

Figures 13, 14, andlJ, illustrate the construction and operation ot" my locking or sliding bolts with er@ panded ends, for capstan and windlasspurposes Financ 15 shows one ofthe many modes oi' pivoting the end of the rocking shaft.

Figure 16 is a view of the' other end of the rocking shaft. y

Figure 17 shows a roll for the. rock-shaft to play in Figure 1S shows a shoe for the. same purpose.

c is aJ capstan, of any of the diiibrent kinds patented or in usc, or otherwise, from which a central shal't, l), may be extended, to communicate its motion.

0n thc shaft b, 1, is arranged a cam, c. This ram may hare a single diagonal groove, as shown in tig. 1, or flanges, as shown in fig. .2,`or waved groove or ilaugc, as illustrated in iig. $5, provided, however, that a high `point and a low point ofyihe cam-groove nrtlangre shall be opposite in action to each other. This'cam has a spherical or partly spherical body, to lrcar 1he-describcd cam-groove or flange.

The cam may he secured to the shai't permanently iniijnses where it isalways required when the capstan is used, but in other eases, 1 furnish the shat'tfb wit-l1 any suitable clutch or locking-bolts and lifters, (as see iig.1,) and tit thecam ii'ccly upon the shaft, so vthat it mayhy these means be readily connected or disconnected to or from the shai't. I

"hen it isonly required to use thc capstan in one direction without, andthe other with the windlass, the

cam may be made to clutch automatically when the capstan is turned in the direction required to operatev the windlass, and unclutch when the capstan is turned' in the opposite direction. This maybe doneby auto- Inaticslidingbolts similar to those seenin the capstan, iig. t), or by means ot an automatic clutch similar to the one shownin tig. (i, or the` one in 4, or othcr wisc.

kA rocking or oscillating shaft, d, is arranged to so embrace or engage with the came` as to receive impulse from its two opposite points ot' action simultaneously, and from each in opposite directions. This not only gives the required rocking or oscillating motion to the shaft d, but does it in such a manner that the resistance does not tend to lift or depress the shaft I) or cam c, inasmuch as one side is resisted in one direct-ion with equal force to that with which the otherr is iu the opposite. This hringsvthe strain-on the capst-an-shaft in the best way to be resisted without liability to displacements ot' the. parts.

A suitable| shoe or roller is pivotcd t-o each part oi' 'the rockingr shaft, near the opposing points of action ,of

the cam, and fitted to act in the cam-groove or upon lthe Cam-iiange, as the case maybe; only, it the flange. is used, rolls or a shoe mustembrace it, soas to secure the double or balanced action.

The opposite-end of the rock-shaft from the caml may be pivoted, as shown'in iif. '15, or furnished with a journal in any convenient manner.

`At any convenient point upon the shaft d, a suitable. head or arms, e, are attached hy casting-orotherwisc, and from `this head or these arms c, the desired reciprocating or vibratory mot-ion is communicated to the pawl-cascs or primary levers of a windlass, or to anyiother device foru other required purposes.

The levers f represent the pawl-cases, or other primary levers, orother devices for actuating a. windlass by means ot a vibratory motion.

\Vhen it' is required to operate the windlass, rotary motion is given -to the caps-tan a. h v inea-ns ot' levers `or otherwise, and either with a simple or power-purchase, as the occasion may require, so rotating shait b and cam c, and thereby causing shaft (l to oscillate.

This oscillating or rocking motion ot' shaf'td is comnumicated tothe primary levers of the'wiiullass, either by direct connections, or by direct connections to the beam, (see. iig. 12,) or to thc shackles y, which con neet ltho beam to the primary levers f, or Otherwise, as occasion may require.

l'n iig. t) is illustrated my improved mode of secur ini;` the proper flange-supportfor all the geanteeth, or rather for the teeth of intermediates s.. These have never been provided with Harige-supports to the teeth, o'winf.;l to the absence of any known facility for applyin a tho same so as to admit of the convenienttaking apart and putting together of the part-s of the capstan.

The centre gear is Iurnished with a space between its teeth, which are flanged at the lower end, and the plate or other adjacent parts, to admit the flange of the intermediates s, supporting the upper end of their teeth.

rlhe gears s are then fixed upon shafts e, having bearings in head u, and which may be drawn out freely with the gears s when the centre-gearl is withdrawn, or instead thereof', studs u: may be lixed in head u, and the gears s fitted to turn on, draw o', and slip on them without hindrance, whenever the centre gear is withdrawn, the.

Figs. 13 and 19 illustrate the construction and useful el'cct of my improved olts, with expanded ends for capsta-n and windlass-purposes.

'lhe expanded ends, it will be noticed, prevent the bolts from slipping when in use. The frontgiving the proper upright face, and the back coming under the shoulder of the socket,`prevent it slipping up, notwithstanding the great looseness allowed, to prevent its rusting in.

The same principle is applied to the automatic Lolts secu in fig. 14, to which, however, it is not quite so well adapted, but serves well.

It will be observed that in this description, the terms upper and lower, 85e., indicating an upright arrangement of parts, for convenience in the description,

v do not presuppose that such devices may not be used The parts, when not otherwise specified, may be filling the conditions required.

Thus having described my invention,

W'hat I claim, and desire to secure by Letters latent, is as follows: l

l. The combination of the capstan-windlass with the double-acting cam and the rocking shaft, substantially as described. y

2. The rocking shaft d, constructed .with wrists and rolls or slidingbloeks, (see gsl, 17, and 18,) and furnished with arms or head e e, in combination with a double-acting cam and shaft, c b, substantially as and for the purposes set forth.

3. The combination of the vibrating beam, irrespective of its lever-sockets, with the rock-ing shaft and pawl-cases or primary levers of lthe windlass.

4.y The arrangement o f the flanged intermediate gear or gears s, in combination with the space between the teeth of the centre gear and its ratchet-plate or other adjacent part, substantially as described.

5. Constructing thelocking or sliding bolts ofa capstan, (see figs. 13, 14, and 19,) with expanded ends, substantially' as and forthe purpose set forth.

lVitnesses: DAYID N. B. GOFFIN, Jn.

JOSEPH H. Lewis, l'. l). SPAULMNG.

made of the materials ordinarily employed in the con' struction of capstans and windlasses, or any others 

